Nonlinear dynamic response analysis of buildings for wind loads. A new frontier in the structural wind engineering

Iancovici, Mihail; Ionică, Georgiana; Pavel, Florin; Mo, Florin; Nica, George Bogdan

doi:10.1016/j.jobe.2021.103708

Cited by 8 publications

(4 citation statements)

References 7 publications

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“…The dynamic nature of wind makes it a formidable force that structures must contend with [149,150]. Variations in wind speed, direction, and turbulence levels can exert substantial forces on flexible structures [151].…”

Section: Bridging the Gap In Wind-structure Interaction Researchmentioning

confidence: 99%

Breaking Boundaries in Wind Engineering: LSU WISE Open-Jet Facility Revolutionizes Solar Panel and Building Design

Aly

2023

Applied Sciences

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Experimental wind engineering is crucial for global structural design. This paper addresses limitations in aerodynamic testing, particularly in wall-bounded and small-scale scenarios. Open-jet testing, introduced as an advanced tool, overcomes turbulence modelling constraints, providing a more accurate representation of real-world conditions. The LSU WISE open-jet facility produces complete turbulence at a large scale, eliminating the need for corrections accompanied by partial turbulence simulation. This discovery holds significant implications in wind engineering and unsteady aerodynamics. Integrating photovoltaic panels with gable-roofed buildings may not require additional structural reinforcement, with a reduction in wind uplift forces by 45–63%. Building-integrated photovoltaics (BIPV) offer design flexibility and aesthetic appeal despite potential higher upfront costs. Strategic interventions, such as design optimization and cost-effective installation methods, can enhance the economic viability of BIPV systems. Contrary to long-held beliefs, the findings challenge the notion that wind loads on structures with sharp corners are insensitive to Reynolds number. Open-jet testing produces higher peak pressures, providing real-world justification for actual damage in high-rise buildings. These results validate the author’s hypothesis regarding the underestimation of peak loads (in small-scale testing) leading to cladding failure in high-rise buildings. They emphasize the superiority of large-scale open-jet testing, underscoring its critical role in designing resilient structures. The LSU WISE open-jet facility’s unique capabilities hold immense promise for revolutionizing wind engineering, addressing grand challenges, and creating more resilient and sustainable infrastructure. Its applications span critical infrastructure, promising significant economic, societal, and educational impacts in STEM fields.

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Section: Bridging the Gap In Wind-structure Interaction Researchmentioning

confidence: 99%

Breaking Boundaries in Wind Engineering: LSU WISE Open-Jet Facility Revolutionizes Solar Panel and Building Design

Aly

2023

Applied Sciences

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“…Next the data is fed into the main nonlinear routine embedded in block (e). In this block, using a while loop, the K d matrix and (∆θ trial ) vector are updated to the actual values (Figure 1, Equations ( 16) and ( 17)) in order to determine the real bending moments (m k+1 ) Equations ( 10) and (11). Furthermore the final plastic rotation (theta_p) and consequently the plastic displacement (x_p) are determined.…”

Section: Validation Of the Dynamic Nonlinear Modelmentioning

confidence: 99%

“…A major breakdown of the FAM has been achieved when the concept of FAM 3D was introduced [10]. The 3D case of FAM was addressed in [11] for the analysis of structural models subjected to long-duration time-histories of wind loads and for the assessment of the structural damage state. The concept of axial force-bending moment interaction surface, coupled with an efficient return mapping algorithm was used [12].…”

Section: Introductionmentioning

confidence: 99%

New Approach to Nonlinear Dynamic Analysis of Reinforced Concrete 3D Frames; An Accurate and Computational Efficient Mathematical Model

et al. 2022

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The structural engineering community often deals with the issue of inelastic incursions of the structural response. Although buildings situated in seismic regions are usually designed using elastic analysis, most encounter significant inelastic deformations when major events occur. In general, material nonlinearity is the most important source of nonlinearity considered in the dynamic analysis commonly performed in structural design. In this paper, the recent concept of the force analogy method for 3D structures is developed and integrated into an accurate computational efficient algorithmic routine for nonlinear dynamic analysis of reinforced concrete frames. Moreover, a unique straightforward mathematical model for the numerical implementation of degrading cyclic behavior of structural elements is proposed and further used to simulate the response of a 10 story reinforced concrete frame structure. A set of nonlinear dynamic analyses are performed using the proposed algorithm in order to assess the structural damage in case of different peak ground accelerations seismic recordings. The seismic structural damage is evaluated using both structural response parameters expressed in terms of displacement and energy concepts.

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“…Biosensors come in a range of sizes and forms and use a variety type of transducers, such as ion-selective electrodes, thermal, optical, piezoelectric, and electrochemical electrodes. The electrical and optical transducers are often selected among them due to their inherent advantages [6][7][8]. The research presented here makes it clear that a simple quasi-static approach to wind loading that is commonly used in the design of low-to medium-rise buildings is insufficient when applied to very tall buildings.…”

Section: Introductionmentioning

confidence: 99%

A Comparison of the Effects of Different Slopes on Building Reaction in Wind Zones

Saxena,

Himabindu,

Helena Raj

et al. 2024

E3S Web of Conf.

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Understanding and analysing wind-induced vibrations is a crucial part of the overall evaluation, design, and construction of high-rise building structures. Developers are exploring and using sloped or steep terrain for construction due to the ongoing trends of urbanisation, the ongoing demand for housing, and the constraints placed on available land resources. This change in the landscape underscores the necessity for considerable research endeavours by requiring a comprehensive grasp of the structural equilibrium of structures positioned on slopes. To investigate how wind speed affects the way building frames respond structurally when situated on sloping terrain is the principal objective of this research project. The study considers alternative frame geometries in combination with varying ground slopes. By highlighting the Taking into account wind loads—especially in different wind zones (like III and IV)—and different slopes— from 0° to 10°—the study seeks to clarify the complex dynamics at play in the relationship between wind forces and multi storey reinforced concrete building frames. As a consequence, it is essential to determine if a hillside can sustain building loads. In order to estimate the factor of safety against the slope’s sliding collapse, this study proposes a method that takes building loads transferred to the slope into account. Wind forces might also be included in the analysis. It is feasible to consider various slopes similar to the formulation provided in the research. Research on the stability of slopes with different building configurations has been conducted. This research has discussed the measures that must be implemented for stepped foundations on hill slopes.

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Nonlinear dynamic response analysis of buildings for wind loads. A new frontier in the structural wind engineering

Cited by 8 publications

References 7 publications

Breaking Boundaries in Wind Engineering: LSU WISE Open-Jet Facility Revolutionizes Solar Panel and Building Design

Breaking Boundaries in Wind Engineering: LSU WISE Open-Jet Facility Revolutionizes Solar Panel and Building Design

New Approach to Nonlinear Dynamic Analysis of Reinforced Concrete 3D Frames; An Accurate and Computational Efficient Mathematical Model

A Comparison of the Effects of Different Slopes on Building Reaction in Wind Zones

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